Formaldehyde
Both Fair And Balanced
Can I check something?
Do you have a problem with the US not just refusing entry but threatening criminal charges against foreign businessmen who do business with Cuba, thus denying the right of those individuals to liberty (which IMHO is even more funsdamental than the right to free speech) despite them having done nothing whatsoever illegal?
First, I think the US trade embargoes against Cuba are ludicrous. Hopefully, all that will soon change. See a recent thread on that topic for further details.
Second, I do not think these businessmen should be denied entry. As you pointed out, what they are doing is not illegal in their own countries. It would be similar to the US trying to deny entry to any Canadian who ever vacationed there, or denying entry to anybody who has ever smoked pot in Amsterdam for that matter.